fix a typo and shrink it to 39 DIN A4 pages

mksh.1

@@ -1,4 +1,4 @@
-.\" $MirOS: src/bin/mksh/mksh.1,v 1.80 2007/03/10 00:34:54 tg Exp $
+.\" $MirOS: src/bin/mksh/mksh.1,v 1.81 2007/03/10 21:14:07 tg Exp $
 .\" $OpenBSD: ksh.1,v 1.118 2006/11/30 08:47:58 jmc Exp $
 .\"
 .Dd March 10, 2007
@@ -173,14 +173,11 @@ substitution and the resulting file
 (if any) is read and executed.
 If the
 .Ev ENV
-variable is unset or empty, the file
+variable is unset or empty, but not set to a non-existing filename, the file
 .Pa $HOME/.mkshrc
 is read and processed like above instead, leaving
 .Ev ENV
-unset in the shell environment.
-This processing does not occur if
-.Ev ENV
-is set to a non-existing filename.
+unchanged.
 .Pp
 The exit status of the shell is 127 if the command file specified on the
 command line could not be opened, or non-zero if a fatal syntax error
@@ -737,10 +734,9 @@ succeeds).
 .It
 The single argument form of
 .Ic test ,
-which tests if the argument has a non-zero length, is not valid; explicit
-operators must always be used e.g. instead of
-.No \&[ Ar str No \&]
-use
+.No \&[ Ar str No \&] ,
+which tests if the argument has a non-zero length, is not valid;
+use explicit operators instead, i.e.\&
 .No \&[[ -n Ar str No \&]] .
 .It
 Parameter, command, and arithmetic substitutions are performed as expressions
@@ -750,12 +746,12 @@ and
 .Ql \*(Ba\*(Ba
 operators.
 This means that in the following statement,
-.Ic $(\*(Lt foo)
+.Ic $(\*(Ltfoo)
 is evaluated if and only if the file
 .Pa foo
 exists and is readable:
 .Bd -literal -offset indent
-$ [[ -r foo && $(\*(Lt foo) = b*r ]]
+$ [[ -r foo && $(\*(Ltfoo) = b*r ]]
 .Ed
 .El
 .El
@@ -982,16 +978,15 @@ As a special case in command substitutions, a command of the form
 is interpreted to mean substitute the contents of
 .Ar file .
 Note that
-.Ic $(\*(Lt foo)
+.Ic $(\*(Ltfoo)
 has the same effect as
 .Ic $(cat foo) ,
 but it is carried out more efficiently because no process is started.
 .Pp
 .Sy Note :
 .Pf $( Ns Ar command Ns \&)
-expressions are currently parsed by finding the matching parenthesis,
+expressions are currently parsed by finding matching parentheses,
 regardless of quoting.
-This should be fixed soon.
 .Pp
 Arithmetic substitutions are replaced by the value of the specified expression.
 For example, the command
@@ -1382,7 +1377,9 @@ parameters all point to the same file.
 If
 .Ev HISTFILE
 isn't set, no history file is used.
-This is different from the original Korn shell.
+This is different from
+.At
+.Nm ksh .
 .It Ev HISTSIZE
 The number of commands normally stored for history.
 The default is 500.
@@ -1429,7 +1426,7 @@ When using
 .Ic getopts ,
 it contains the argument for a parsed option, if it requires one.
 .It Ev OPTIND
-The index of the next argument to be processed when using
+The index of the next argument to be processed by
 .Ic getopts .
 Assigning 1 to this parameter causes
 .Ic getopts
@@ -1548,7 +1545,7 @@ if the shell doesn't know where it is.
 Every time
 .Ev RANDOM
 is referenced, it is assigned a pseudo-random number first.
-By default, if available,
+By default,
 .Xr arc4random 3
 is used to produce unsigned 15\-bit values (0\-32767)
 whose quality depends on the operating environment.
@@ -3262,8 +3259,8 @@ the positional parameters (or to array
 if
 .Fl A
 is used).
-.It Fl U \(*Ba Ic utf8-hack
-Enable an experimental UTF-8 hack for the
+.It Fl U \*(Ba Ic utf8-hack
+Enable UTF-8 support in the
 .Sx Emacs editing mode .
 This is enabled automatically for interactive shells if your system supports
 .Fn setlocale LC_CTYPE \&""
@@ -3323,10 +3320,13 @@ Do not kill running jobs with a
 .Dv SIGHUP
 signal when a login shell exits.
 Currently set by default, but this will
-change in the future to be compatible with the original Korn shell (which
+change in the future to be compatible with
+.At
+.Nm ksh ,
+which
 doesn't have this option, but does send the
 .Dv SIGHUP
-signal).
+signal.
 .It Ic nolog
 No effect.
 In the original Korn shell, this prevents function definitions from
@@ -3905,7 +3905,7 @@ If any of the
 or
 .Fl Z
 options are changed, all others from this set are cleared,
-unless they are also given on the same command line.
+unless listed in the same command.
 .Pp
 .It Xo
 .Ic ulimit
@@ -4586,8 +4586,8 @@ Set the mark at the cursor position.
 If at the end of line, or if the
 .Ic gmacs
 option is set, this exchanges the two previous characters; otherwise, it
-exchanges the previous and current characters and moves the cursor one
-character to the right.
+exchanges the previous and current characters and moves the cursor right
+one character.
 .It Xo up-history:
 .Op Ar n
 .No ^P , ^XA
@@ -4624,7 +4624,7 @@ editor with the following exceptions:
 .It
 You start out in insert mode.
 .It
-There are file name and command completion commands:
+There are file and command completion commands:
 =, \e, *, ^X, ^E, ^F, and, optionally,
 .Aq tab
 and
@@ -4632,11 +4632,8 @@ and
 .It
 The
 .Ic _
-command is different (in
-.Nm
-it is the last argument command; in
-.Xr vi 1
-it goes to the start of the current line).
+command is the last argument command instead of
+going to the start of the current line.
 .It
 The
 .Ic /
@@ -4695,9 +4692,7 @@ Command and file name expansion (see below).
 .It Aq esc
 Puts the editor in command mode (see below).
 .It Aq tab
-Optional file name and command completion (see
-.Ic ^F
-above), enabled with
+Optional file name and command completion, enabled with
 .Ic set -o vi-tabcomplete .
 .El
 .Pp
@@ -4725,11 +4720,7 @@ contains two words) and a
 .Dq big-word
 is a sequence of non-whitespace characters.
 .Pp
-Special
-.Nm
-vi commands:
-.Pp
-The following commands are not in, or are different from, the normal vi file
+The following special commands are not in, or are different from, the normal vi file
 editor:
 .Bl -tag -width 10n
 .It Xo
@@ -5282,10 +5273,8 @@ and many other persons, and is currently maintained by
 .An Thorsten Glaser Aq tg@mirbsd.de .
 .Sh BUGS
 This document attempts to describe
-.Nm mksh R29 ,
-compiled without
-.Dv MKSH_SMALL
-or other functionality-reducing options.
+.Nm mksh R29b ,
+compiled without any options impacting functionality.
 Please report bugs in
 .Nm
 to the
@@ -5295,7 +5284,7 @@ mailing list or in the
 or
 .Li \&#ksh
 IRC channel at
-.Pa irc.freenode.net .
+.Pa irc.freenode.net:6667 .
 .Pp
 By the way, the most frequently reported bug is:
 .Bd -literal -offset indent